YOU SAID:
Hi I am a good math person!
INTO JAPANESE
こんにちは、私は数学が上手です!
BACK INTO ENGLISH
Hi, I am good at math!
INTO JAPANESE
数学が得意です。
BACK INTO ENGLISH
I am good at math.
INTO JAPANESE
数学が得意です。
BACK INTO ENGLISH
I am good at math.
You've done this before, haven't you.